Improvement in street-lamps



-2 Sheets--Sheet 1. C. B. BDYLE.

- StreetwLamps. N0. 158,396. Patented 1an. 5, 1875.

2`Sheets--Sheet 2. C. B. BOYLEV.

. Street-Lamps. No.l'58,396 Y Y Patentenllan.5,1315.,l

)WZ-Messes; i FIGC 2 UNITED STATES PATENT OFFICE.

CHARLES B. BOYLE, OF NEW YORK, N. Y.

IMPROVEMENT IN STREET-LAMPS.

Speciication forming part of Letters Patent No. 158,396, dated January 5, i875; application filed June 5,1874.v

To all whom it may concern:

Be it known that I, CHARLES B. BOYLE, of' the city, county, and State of New York, have invented a new and Improved StreetLamp; and I do hereby declare the following to be a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in so combining a system ot' retiecting-surfaces that the light which is now radiated upward into space from the street-lamps in use, and other outdoor lamps, may be intercepted and distributed over the spaces which it was intended to illuminate.

Figure 1 shows an outline side view upon a reduced scale of an ordinary street-lamp, from its bottom to its cornice, above which the upper portion of the improved street-lamp is represented.

B is the burner; F, the flame and point of radiation. The shafts of the broken arrows represent` the direction taken by the radiated or emitted rays, while the barbs indicate their course after the interposed reflectors have altered their direction. A A are the surfaces ot' the first reiiector.v (Shown in section.) The angles of emitted light which they intercept are directed back to the street, as indicated by the barbs C C. D D are the surfaces of the second reiiector, which direct the light they reflect back to the street, as shown by the arrows G G, and H H are the third reflector, which intercepts the light escaping through the flue or chimney and directs it back to the street, as shown by the barbs I I. J J J show sectional views of the roofs of the lamp, and K K are'wires, which support the upper re tlector and its roof above the main roof.

The drawing shows the application ot such a system of reflectors to the form of the lamps now in use; but it can bc adapted to those ot' any form or size.

What I claim as my invention, and desire to secure by Letters Patent, is-

The combination of retlcctors, A throwing the light downward and inward, D throwing outward and downward the light received through A, and H, in like manner, throwing the light received through D downward and outward, as shown and described.

New York, Julie 2, 1874.

' CHAS. B. BOYLE. Witnesses FRANK P. CRAsTo, LoUIs R. FRANK. 

